高压物理学报

2001 Vol. 15, No. 4

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Pressure Induced Rice Mutation and Effects of High Hydrostatic Pressure on the Growth and Development of Rice

XU Shi-Ping, LIAO Yao-Ping, WENG Ke-Nan, XIAO Wan-Sheng, CHEN Zhao-Ming, Lü Guang-Cai, HE Xiu-Ying

2001, 15(4): 241-248 . doi: 10.11858/gywlxb.2001.04.001

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Abstract:
The grains of Yuexiangzhan, a new rice variety (Oryza sativa L.) with a high harvest index of 0.619, had been treated with high hydrostatic pressure and laboratory cultivated for three growth periods. Compared with the controls, germinating ability of high-pressure treated seeds and growth rates of ...

One-Dimensional Numerical Simulation of Discharge Plasma

LIU Dong-Yao, ZHOU Yan-Huang

2001, 15(4): 249-253 . doi: 10.11858/gywlxb.2001.04.002

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Abstract:
A one-dimension time-dependent model of discharge plasma is presented in this paper by the analyzing of plasma behaviors in capillary. The state of equation and the electrical conductivity of non-ideal plasma are described in terms of thermodynamic characters. These coupled equations are solved by s...

Crystallization of Plating-Manganin Piezoresistance Gauges

SHI Shang-Chun, DONG Shi, HUANG Yue, ZHOU Hong-Ren

2001, 15(4): 254-258 . doi: 10.11858/gywlxb.2001.04.003

PDF (648)

Abstract:
Magnetically controlled cathod plasma sputtering technique was used to manufacture the plating-manganin film. Although the film was the same metal-construction feature as manganin-alloy does, it has smaller crystalloid-size, twice resistivity and less piezoresistance coefficient than the alloy. Howe...

Rapid Sintering of Nanocrystalline ZrO2 (4Y), Powder under High Pressure

YUAN Wang-Zhi, TIAN Wei, GUO Jie, LAO Ling-Er, WANG Da-Zhi, YAO Kun

2001, 15(4): 259-264 . doi: 10.11858/gywlxb.2001.04.004

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Abstract:
Nanocrystalline ZrO2 (4Y) powders were sintered under 4 GPa and at 1 000～1 200 ℃ for 2 min. The results show that the relative density of undamaged sintered ceramics body is 99.3%. In the sintering process under high pressure, activation energy is less than that by other method because of the effect...

The Dynamic Mechanic Characteristics of Tantalum under Shock Loading

ZHANG Lin, CAI Ling-Cang, WANG Wu, LI Da-Hong, WANG Xiao-Song, CHEN Hong

2001, 15(4): 265-270 . doi: 10.11858/gywlxb.2001.04.005

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Abstract:
Symmetrical impact experiments were performed for tantalum, the free surface velocity profiles were measured with VISAR system. Making use of the double wave configurations of shock loading, the shock wave velocities were determined at stresses below 30 GPa, and a very good linear dependent relation...

The Equation of State for the Plasma Hydrogen at High Density

LI You-Kuan, CHEN Dong-Quan, LI Mao-Sheng, DONG Hang

2001, 15(4): 271-276 . doi: 10.11858/gywlxb.2001.04.006

PDF (670)

Abstract:
The equations of state were calculated with Thomas-Fermi (TF) method and TF equivalent ionicity was introduced for the plasma hydrogen. The calculated results of the equivalent ionicity indicated that TF method can be used in wide range of the temperature (T) and density (), and is more reasonable t...

Optical Radiation Properties of NaCl Crystal under Shock Compression

HU Jin-Biao, TAN Hua, TANG Zhi-Ping, YANG Jia-Ling

2001, 15(4): 277-284 . doi: 10.11858/gywlxb.2001.04.007

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Abstract:
The optical absorptances of crystal NaCl under shock compression from 40 GPa to 70 GPa were measured using optical radiation technique. Comparing with Kormer's results, our results are almost as ten times as Kormer's results when shock pressure is about 60 GPa. The results show that the possible rea...

Radiant Properties of Argon Gases under Shock Compression

TANG Jing-You, PENG Qi-Xian, GU Yan, HU Hai-Bo, WANG Gui-Chao, DONG Qing -Dong

2001, 15(4): 285-290 . doi: 10.11858/gywlxb.2001.04.008

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Abstract:
Aluminum targets filled with argon gas were impacted by tungsten projectiles with velocities of 1.78 km/s, 2.00 km/s, and 2.76 km/s. The radiation of the gas following the shock fronts was recorded using a six-channel pyrometer and oscilloscopes. The velocities of shock waves in the gas were measure...

Effect of Inner Liner Material (Dolomite) on Synthetic Diamond

CHEN Tian-Hu, WANG Dao-Xuan, FANG Xiao-Hu, TANG Shu-Pei

2001, 15(4): 291-296 . doi: 10.11858/gywlxb.2001.04.009

PDF (620)

Abstract:
From the investigations on the inner liner material made up of mainly dolomite by slice, X-radial powder diffraction and chemical analysis before and after high temperature and pressure, it is found that dolomite is stable under the conditions of high temperature and pressure. However permeating cle...

Transport Properties of KNb1-xMgxO3- Synthesized under High-Temperature and High-Pressure

XIANG Jun, LI Li-Ping

2001, 15(4): 297-303 . doi: 10.11858/gywlxb.2001.04.010

PDF (845)

Abstract:
Single phase KNb1-xMgxO3- (0.0～0.3) ion conductors were prepared using high temperature and high pressure method. The structural characteristics and ionic conductivities of KNb1-xMgxO3- solid solutions were investigated by XRD, TG-DTA and A-C impedance spectra measurements. The XRD results show that...

Hugoniot Relation of JB9014 Insensitive High Explosive

ZHANG Xu, CHI Jia-Chun, FENG Min-Xian

2001, 15(4): 304-308 . doi: 10.11858/gywlxb.2001.04.011

PDF (865)

Abstract:
The Hugoniot relation of JB9014 insensitive high explosive was investigated experimentally. A LY12Al flyer is driven by detonation wave which is attenuated with a metal plate. Manganin gauges were used to record the interface pressure pexp and pAl between the LY12Al base plate and the explosive samp...

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Founded in 1987, monthly

Hosted by:Institute of Fluid Physics, CAEP

Sponsored by:Topical Committee of High Pressure of Chinese Physical Society Sichuan Physical Society

Editor-in-Chief:MA Yanming

2001 Vol. 15, No. 4

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